Geron Corporation

Dr. Richard Fessler leaned over his patient's back and sliced through skin, muscle and bone until he exposed the man's spinal cord, crushed just days earlier in a motorcycle crash. He then inserted a syringe into the cable of nerves and injected about 1 million cells grown from an embryo donated more than a decade earlier at a Wisconsin fertility clinic. The procedure, performed at Northwestern Memorial Hospital last spring, was a monumental event, part of the world's first test in humans of a therapy derived from human embryonic stem cells. But several months later, after four patients had received the transplants, Fessler opened an email from his office informing him that...

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Dr. Richard Fessler leaned over his patient's back and sliced through skin, muscle and bone until he exposed the man's spinal cord, crushed just days earlier in a motorcycle crash.
He then inserted a syringe into the cable of nerves and injected about...